Alexander Kuna, Ph.D.

Research interests:

Measurement of frequency stability and phase noise in quartz oscillators, precise time and frequency transfer using satellite positioning systems (GPS, EGNOS, GLONASS, Galileo) and optical networks.

Professional activities:

Member of the technical committee for accreditation of calibration laboratories of the Czech Accreditation Institute.

Member of the technical committee for time and frequency of EURAMET.

Head of the technical committee for time and frequency of the Czech Office for Standards, Metrology and Testing.

Education:

2011 - Ph.D. Measurement and Instrumentation, Czech Technical University, Faculty of Electrical Engineering, Prague, Czech Republic

2004 - M.Sc. Measurement and Instrumentation, Czech Technical University, Faculty of Electrical Engineering, Prague, Czech Republic

Current projects:

Principal investigator of the following project:

Past Projects:

Principal investigator of the following projects:

• Accurate time/frequency comparison and dissemination through optical telecommunication networks
• Utilization of the new satellite navigation system generation for comparison of time scales
• Metrology Development Program 2012 - Maintaining National Time and Frequency Standard
• Metrology development program 2012 - Precision Time and Frequency Measurement
• Usage of DWDM optical network for time and frequency transfer
• Metrology Development Program 2011 - Maintaining National Time and Frequency Standard
• Metrology Development Program 2011 - Precision Time and Frequency Measurement
• Metrology Development Program 2010 - Maintaining National Time and Frequency Standard
• Metrology Developmet Program 2010 - Precision Time and Frequency Measurement
• Metrology Development Program 2009 - Precision Time and Frequency Measurement
• Metrology Development Program 2009 - Maintaining National Time and Frequency Standard

Member of the following projects:

• Time Transfer using Optical Fiber Links
• Calibration of time-stamp appliances (EUROMET Project #917, not funded)

Publications:

Journal Papers:

1. Salzenstein P., Cholley N., Kuna A., Abbé P., Lardet-Vieudrin F., Sojdr L. and Chauvin J. Distributed amplified ultra-stable signal quartz oscillator based. Measurement, Vol. 45, No. 7, pp. 1937-1939, 2012.
2. Salzenstein, P. and Kuna, A. and Šojdr, L. and Chauvin, J.: Significant Step in Ultra High Stability Quartz Crystal Oscillators, Electronics Letters, Vol. 46, No. 21, 2010. 
3. Kuna, A. and Čermák, J. and Šojdr, L. and Salzenstein, P. and Lefebvre, F.: Lowest Flicker-Frequency Floor Measured on BVA Oscillators, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 57, No. 3, pp. 548-551, 2010. 
4. Salzenstein, P. and Kuna, A. and Šojdr, L. and Sthal, F. and Cholley, N. and Lefebvre, F.: Frequency Stability Measurements of Ultrastable BVA Resonators and Oscillators, Electronics Letters, Vol. 46, No. 10, pp. 686-688, 2010.

Conference Papers:

1. Smotlacha, V. and Kuna., A.: Two-Way Optical Time and Frequency Transfer between IPE and BEV, Proc. 26th European Frequency and Time Forum, Gothenburg, Sweden, Apr 2012
2. Smotlacha, V. and Kuna, A.: Time and Frequency Transfer in All-Optical Network, in Proceedings of the Terena Networking Conference, May 2011. 
3. Pánek, P. and Kuna, A.: Time and Frequency Transfer Using EGNOS Satellite System, in Proceedings of the PTTI, Nov 2011. 
4. V. Smotlacha, A. Kuna, and W. Mache: Optical Link Time Transfer Between IPE and BEV, in Proceedings of the PTTI, Nov 2011. 
5. Smotlacha, V. and Kuna, A. and Mache, W.: Time Transfer In Optical Network, Proc. 42nd Annual Precise Time and Time Interval Meeting, Reston, Virginia, USA, pp. 427-436, 2010. 
6. Smotlacha, V. and Kuna, A. and Mache, W.: Time Transfer Using Fiber Links, Proc. 24th European Frequency and Time Forum, Noordwijk, The Netherlands, 2010. 
7. A. Kuna, J. Čermák, L. Šojdr, P. Salzenstein, F. Lefebvre: Comparison of Utra-Stable BVA Oscillators, Proc. 22nd European Frequency and Time Forum, Toulouse, France, FPE-0014.pdf, 2008. 
8. Čermák, J., Kuna, A., Šojdr, L., Salzenstein, P.: Short-Term Frequency Stability Measurement of BVA Oscillators, Proc. Joint IEEE Frequency Control Symposium and European Time and Frequency Forum, Geneva, Switzerland, 1255-1260, 2007. 
9. P. Salzenstein, F. Lefebvre, R. Barillet, J. Čermák, W. Schaefer, G. Cibiel, G. Sauvage, O. Franquet, O. Llopis, F. Meyer, N. Franquet, X. Vacheret, A. Kuna, L. Šojdr, G. Hejc and S. Gribaldo: Phase Noise Interlaboratory Comparison Reliminary Results, Proc. 20th European Frequency and Time Forum, Braunschweig, Germany, 147-151, 2006. 
10. H. Esteban, J. Palacio, F. J. Galindo, J. A. Lima, J. Čermák, A. Kuna: A GPS CV Link Experience between ROA and IREE. Proc. 20th European Frequency and Time Forum, Braunschweig, Germany, pp. 553-556, 2006. 
11. A. Kuna, J. Čermák, B. Čemusová: Time Stability of a Conventional Optical Link, Proc. International Conference on Advanced Optoelectronics and Lasers (CAOL 2005), Yalta, Ukraine, pp. 176-179, 2005. 
12. R. Barillet, J. Čermák, L. Šojdr, A. Kuna: On Twofold Use of Dual-Mixer Time-Difference Multiplication, Proc. 19th European Frequency and Time Forum, Besançon, France, pp. 366-371, March 2005